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A lead pencil consists of a cylinder of wood with a solid cylinder of graphite fitted into it. The diameter of the pencil is 7 mm the diamter of graphite is 1mm and the length of pencil is 10 cm .Calculate the weight of the whole pencil ,if the gravity of the wood is 0.7 g per cm2 and that of the graphite is 2.1 g / cm2

Posted by Tanvi Singh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

How much is 1 million

Posted by Abhijith V 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Vaisnav Ramesh 8 years, 4 months ago

10 Lakhs

ANSWER

if 1cm= 1000m. then 1000m = ?

Posted by Khan Saif 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

If parallelogram have length 8 and 10 cm respectively .what is the area of one triangle made by its diagonals

Posted by Satyam Tiwari 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Bhoomi 8 years, 4 months ago

40 cm sq.

ANSWER

Find the perimeter and the area of the quadrilateral ABCD in which ab = 17 cm and 89 CM 312 cm and angle ACB equal 90 degree and ac = 15 CM.

Posted by Muskan Kushwaha 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

How to do rationalisation in complex questions

Posted by Ritika Goyal 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

2×3+4×23÷46×+6744-5785

Posted by Śàģàŕ Ŕàñà 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

3x-2=0

Posted by Aishwarya Mohanty 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Vaishnavi Shrivastava 8 years, 4 months ago

3*-2 is equal to -6

ANSWER

If D is the mid point of the hypotenuse AC of a right triangle ABC prove BD=1/2AC

Posted by Umang Singh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Prove that area of equilateral triangle is A by using Heron's formula. Also find the area of equilateral triangle if the perimeter is 180cm

Posted by Sneha Sinha 8 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Poonam Solanki 8 years, 4 months ago

Ar of the triangle is =√3÷4×a×a = √3÷4×36 =√3×9. =15.588

Vaishnavi Shrivastava 8 years, 4 months ago

900 root 3

ANSWER

If the non parallel sides of trapezium are equal ,prove that it is a cyclic

Posted by Anshika Pal 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Does the questions in final term come from outside or ncert book

Posted by Anmay Srivastava 8 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Anmay Srivastava 8 years, 4 months ago

Hi vaishnavi

Vaishnavi Shrivastava 8 years, 4 months ago

Sometimes it may comes .

ANSWER

What do you understand by ordinate

Posted by Siddhartha Singh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Jyoti Sinha 8 years, 4 months ago

Ordinate is the Y axis

ANSWER

Find five rational numbers between 1 and 2

Posted by Rajeshwari Hosamani 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Find the value of a if 6÷3√2-2√3=3√2-a√3

Posted by Harshit Banga 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Poonam Solanki 8 years, 4 months ago

a=2.47

ANSWER

how to prove a parallelogram a rectangle

Posted by Pratyush Dash 8 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Vaishnavi Shrivastava 8 years, 4 months ago

When opposite sides are equal then a parallelogram is a rectangle

Anmay Srivastava 8 years, 4 months ago

When it's each vertex is 90

ANSWER

Construct an angle of 67.5°

Posted by Nikunj Goyal 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Aarya Marve 8 years, 4 months ago

You have to construct with a protractor

ANSWER

What is quadrilateral?

Posted by Naval K 8 years, 4 months ago

CBSE > Class 09 > Mathematics

4 answers

Vaishnavi Shrivastava 8 years, 4 months ago

a figure with a four closed sides

Devi Dev 8 years, 4 months ago

This is one type of polygon .it is also known as four side polygon

Madhusudhan Pujari 8 years, 4 months ago

A polygon which is made up of four sides is called quadrilateral

Kasish Pilaniya 8 years, 4 months ago

A four sided figure

ANSWER

x2-(1-root2x)+root2=0

Posted by Sojal Shrivastava 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Hard question

Posted by Ravi Kant Ravikant 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Propability

Posted by Rohit Awasthi 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

How to find area

Posted by Ayush Dubey 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Amar Kumar 8 years, 4 months ago

Area is a measure of how much space there is inside a shape.

In order to find an area value, using the grid method,
we need to know the size that a grid square represents.

This example uses centimetres but the same method applies for any unit of length or distance. You could, for example be using inches, metres, miles, feet etc.
In this example each grid square has a width of 1cm and a height of 1cm.

Count the grid squares inside the large square to find its area.
There are 16 small squares so the area of the large square is 16 square centimeters.
In mathematics we abbreviate 'square centimeters' to cm².
The 2 means ‘squared’. Each grid square is 1cm².
The area of the large square is 16cm².

ANSWER

Find Sox rational numbers between 3 and 4

Posted by Ravina Harchandani 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Abhijeet Kumar 8 years, 4 months ago

3.1,3.2,3.3,3.4,3.5,3.6

ANSWER

Equal chords of a circle subtend equal angle at the the center and it's converse.

Posted by Sudhanshu Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Why we can't take 1 in prime number or co-prime number

Posted by Pihu Gupta 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

In the given figure, BE is the bisector of angle B and CE is the bisector of angle ACD. Prove that angle BEC = half of angle A

Posted by Ash Raj 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Please give me the mid point theoram

Posted by Ayush Sahu 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

if x=7 then find the value of x+1/x

Posted by Gokul Chawla 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Vikesh Gupta 8 years, 4 months ago

50/7

ANSWER

In the give figure, ABC is a triangle and BE is perpendicular to AC. AD is any line from A to BC intersecting BE at H. P, Q And R are mid points of AH, AB and BC respectively. Prove that angle PQR is 90°

Posted by Yash Patil 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Does semi circle has rotational symmetry

Posted by Satbirr Singh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Raghvendra Pratap Singh 8 years, 4 months ago

No

ANSWER

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